In the second volume of the Titan trilogy, Earth has made contact with Gaia, the godlike controlling intelligence of the organic worldlet that orbits Saturn. In an effort to gain the goodwill of aggressive humanity, she is offering miracles.

However, she does not give them out for nothing. Those who would appeal to her must first prove their worthiness. The quests they must perform to gain admittance to Gaia's inner sanctum will test both body and soul.

This novel tells the story of one such band of pilgrims. Each has come to Gaia for intensely personal reasons. And each will learn painful truths on the way to meet Gaia.